fix: Timezone changes in toke_auth_strategy.py (#848)

Co-authored-by: Shubham <[email protected]>

Author: Pablo2113

twilio/auth_strategy/token_auth_strategy.py

@@ -1,7 +1,7 @@
 import jwt
 import threading
 import logging
-from datetime import datetime
+from datetime import datetime, timezone
 
 from twilio.auth_strategy.auth_type import AuthType
 from twilio.auth_strategy.auth_strategy import AuthStrategy
@@ -43,8 +43,8 @@ def is_token_expired(self, token):
             if exp is None:
                 return True  # No expiration time present, consider it expired
 
-            # Check if the expiration time has passed
-            return datetime.fromtimestamp(exp) < datetime.utcnow()
+            # Check if the expiration time has passed by using time-zone
+            return datetime.fromtimestamp(exp, tz = timezone.utc) < datetime.now(timezone.utc)
 
         except jwt.DecodeError:
             return True  # Token is invalid